The Met Office has also issued a series of less severe yellow warnings for wind and rain covering much of the UK including Wales, Northern Ireland, Scotland, northern England, south-west England and the West Midlands.
It said that up to 100mm (4in) of rain in some places would lead to “fast-flowing or deep floodwater … causing danger to life” and possible delays and cancellations to train and bus services.
Zoe Hutin, a meteorologist at the Met Office, said there was “quite severe weather coming in from the west” with very strong winds and that Sunday looked to be the worst of the next few days.
The Met Office has issued an amber rain warning for south and mid-Wales from Newport to Carmarthen and north to Brecon between 3pm on Sunday and 6am on Monday.
A prolonged downpour, caused by large area of low pressure moving in from the Atlantic, is “likely to cause some flooding and disruption later today and overnight into Monday”, the warning said.
